Ever since Amazon managed to patent one-click ordering, I have been skeptical of software patents. When I was in the Internet field, I saw companies patent some, uh, patently obvious stuff, roughly akin to patenting an on/off switch. Or even worse, multiple companies would get patents for the equivalent of an on/off switch, with this company claiming it has the patent for on-off switches for lighting, and this one for appliances, and this one for all electrical devices, and then all three end up sitting in court for about 10 years arguing about who has the patent for turning on the bulb in your refrigerator.